Transition words

From https://writing.wisc.edu/handbook/style/transitions/

Transitions to help establish some of the most common kinds of relationships

Causation–Connecting instigator(s) to consequence(s).

accordingly
as a result
and so
because

consequently
for that reason
hence
on account of

since
therefore
thus

Chronology–Connecting what issues in regard to when they occur.

after
afterwards
always
at length
during
earlier
following
immediately
in the meantime

later
never
next
now
once
simultaneously
so far
sometimes

soon
subsequently
then
this time
until now
when
whenever
while

Combinations
Lists–Connecting numerous events.
Part/Whole–Connecting numerous elements that make up something bigger.

additionally
again
also
and, or, not
as a result
besides
even more

finally
first, firstly
further
furthermore
in addition
in the first place
in the second place

last, lastly
moreover
next
second, secondly, etc.
too

Contrast–Connecting two things by focusing on their differences.

after all
although
and yet
at the same time
but

despite
however
in contrast
nevertheless
nonetheless
notwithstanding

on the contrary
on the other hand
otherwise
though
yet

Example–Connecting a general idea to a particular instance of this idea.

as an illustration
e.g., (from a Latin abbreviation for “for example”)

for example
for instance
specifically
that is

to demonstrate
to illustrate

Importance–Connecting what is critical to what is more inconsequential.

chiefly
critically

foundationally
most importantly

of less importance
primarily

Location–Connecting elements according to where they are placed in relationship to each other.

above
adjacent to
below
beyond

centrally
here
nearby
neighboring on

opposite to
peripherally
there
wherever

Similarity–Connecting to things by suggesting that they are in some way alike.

by the same token
in like manner

in similar fashion
here
in the same way

likewise
wherever

Other kinds of transitional words and phrases
Clarification

i.e., (from a Latin abbreviation for “that is”)
in other words

that is
that is to say
to clarify
to explain

to put it another way
to rephrase it

Concession (meaning you concede an opponent's point)

granted
it is true

naturally
of course

to be sure

Conclusion

finally
lastly

in conclusion
in the end

to conclude

Intensification

in fact
indeed
no

of course
surely
to repeat

undoubtedly
without doubt
yes

Purpose

for this purpose
in order that

so that
to that end

to this end

Summary

in brief
in sum

in summary
in short

to sum up
to summarize